/**
 * Copyright 2017-2021 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package ch.rasc.wamp2spring.config;

import org.springframework.core.MethodParameter;
import org.springframework.messaging.Message;
import org.springframework.messaging.handler.invocation.HandlerMethodArgumentResolver;

import ch.rasc.wamp2spring.annotation.WampSessionId;
import ch.rasc.wamp2spring.message.WampMessageHeader;

/**
 * Resolves method parameters annotated with @WampSessionid
 */
public class WampSessionIdMethodArgumentResolver
		implements HandlerMethodArgumentResolver {

	@Override
	public boolean supportsParameter(MethodParameter parameter) {
		return parameter.hasParameterAnnotation(WampSessionId.class);
	}

	@Override
	public Object resolveArgument(MethodParameter parameter, Message<?> message)
			throws Exception {
		return message.getHeaders().get(WampMessageHeader.WAMP_SESSION_ID.name());
	}

}
